Typewriter-friction-rail lubricator



May 5; 1925. 1,536,896

, L. M. LLoRENs TYPEWRITER FRICTION RAIL LUBRICATOR Filed July 30 1924 /45 yer;

' Zarzis/1% llarens:

Patented May 5, 1925.

. tours x-.fntonnnsor nos i i1 rciri-irir.is,CALIromani. `A

,rYrEwaifiEmriiic'rroivfRari. Luis'nrcaron.

alijiiatibnknied my 30,1924". sei-mino, iz'a.-

\ a citiien of the Republic fof Cuba,

Be it known um i. Lome M. Laives, l'eidiils at Los Angeles, county of Los QAiigeles,

California, have invented a new vand useful lnipro'veinent in a TypewriterfFrictioiiRail Luhricator, of which 'the lfollowing is a` specification.

I This invention relatesyto typlevvriting machines, and more particularly to?l Underwood typewriters;

The Underwood typewriter hasl a back rail which is called a friction rail, and on this there f slidesm, without any anti-friction devices. a pair of frictionbearingsf which are alixture withthe carriage of the type writer. Unless the friction rail is' frequently lubricated veryfappreciable vfriction develops in the bearings and vthis makes it vhard vto throw the` ,car1iage"to the right since this `friction is added tofthe tension 'f the draw band.

My present invennprffhsjfr au obiect to obtain a` constantly effective` lubricating means whereby to overcome"`the frictionbearing friction to: a material degree, to eliminate the necessity for almost daily ap-` provide a lubricatingV means ywhich may be initially `built into the typewriter yoi wliich maybe applied' in a few moments vby any one yfamiliar with, they machine, and this Without any structural change whatsver.

An additional Objectis to provide a lubricatingdevice' in theform of an attachment.

An object is to provide a lubricating means which is at oncevery simple, durable,

has no working parts, and requires no spe cial fastening means. And in this connection an object is to provide a lubricator of inexpensive form and which is combined with thevcarriage of the machine in such` manner as to constantly wipe theV friction rail as the carriage moves in either direc tion. Y

Further objects and advantages will be made manifest in the following'` specification of apparatus of my invention, one embodiment of which is illustrated in the accompanying drawing; it beingunderstood `that other modifications, variations and inountingpm Y. t .v In the 'drawing is` shown a partof the adaptations maybe resorted to spirit Voftheinverition andthe scope thereof The invention convsisftl fieans for acf complishing the objects desired4 .F ig. l is a rearvelevationofa partof kan Underwood typewriter, showingA the invention applied. Y o. l K. u

ig.' 2 is a perspective of the lubricator detached 'from the machine.

Fig. 3 is a detail longitudinal section of the lubricator as applied.

Fig. 4 is a section online ofrFig. 3.

Fig. 5` is asectional detail of the rail main frame 2 having .up-standingcorner posts 3 `upon which. are secured hangers 4 forming a part of the rusual friction ,rai-l uponjwhich the rear portion of the ca-rriage traine lis supported. The frame 6 is provided with spaced frictionbearings 7 commonly split at 8 to clearltlie han-gers 4 ofthe rail rI he frame i isalso provided with an oscillator arm rock shaft l0 helical spring 11 yone end of which is attache-dto a `b'ra'cketmlQv the base of which ,is secured, as byscrews 13,`np against the bot toniof the cari'iage-fraine The screws 13 u snallyproject slightly below the base of the bracket l2.

having ,j`

The bearings 7 present a area sliding on; the rail and-unlessit is kept Well lubricated much friction results and makes manual shift laborious, with a Y kloss of speed. 4 x o My invention comprises means whereby lthe rail iskept constantly lubricated. The device, here shown, comprises a' shell in which is retained an absorbent lining or oil reservoir in constant contact with the rail.

The shell is shown as a split cylinder 14,

preferably formed of thin metal, having a lining of felt or other suitable material 15 to engage the rail 5. An edge of the slot of the shell is clinched down at 14 to bind on and hold the felt in place. The other edge of the slot 14h, along the shell, is hooked inwardly at 140 to receive the near edge of the felt without material compression and thus to obtain oil holding capacity. The felt will hold suiii'cient oil to ensure lubrication for a long period. Occasionally additional oil may be applied throughan elongated aperture 16 presented at the outer and upper side of the shell when this is mounted on the rail 5. To provide a convenient guide along whichto pass the spout of an oil can, the shell has an outbent lip or flange 17 along the lower side of the aperture 1G.

To apply the lubricator it is only necessary to loosen and lift the friction rail 5 so that the shell 1/1 can, when the slot lflb is registered with the bracket 1, be slipped endwise onto the rail to a position beneath the base of bracket 12. In this position the screws 13 will project into small holes 18 provided therefor in the top of the shell 1,4-, which has a diameter of such length as to accomplish this interlocking action. The screws 13 prevent end movement and rota.- tion of the shell on the rail.

It will be seen that the lubricator moves with the carriage and keeps the rail well oiled between the bearings 7 which pick up oil and spread it to the limit of their move ment on the rail.

lVhat is claimed is:

Y 1. In a typewriting machine, in combination` a friction rail, a platen carriage movable thereon, and a reciprocating oil reservoir having a part wiping;- on the rail to constantly lubricate the same.

Q. In a typewriting machine, in combination, a friction rail7 and means monnted thereon for lubricating the rail. and a carriage movable along the rail., and operatively attached to the said means.

8. In a typewritingmachine, in combination, a friction rail, a carriage movable along the rail, and a lubricating` device operative by the carriage and ha ving a part wiping on the rail to suoplj,7 lubricant to the same.

4. In a typewriting machine, in combination, a friction rail, a carriage movable along` the rail, and a lubricating' device mounted on the rail and operative by the carriage and having a part wiping on the rail to supply lubricant to the same.

5. A lubricator adapted for attachment to a typewriting machine carriage so as to move with the carriage thereof and having a part to wipe on the usual friction rail of the machine,

vtypowriting machine, comprising G. A lubricator for typewriting machines having a friction rail, comprising a shell having an oil holding lining adapted for arrangement on. the rail, and for movement along the rail by the carriage of the typewriting machine.`

7. A lubricator for typewriting machines having a friction rail, comprising an elongated shell having an oil holding pad engaging the rail, and means connecting the shell to the carriage of the typewriting machine so as to move the shell with the carriage. l

8. A lubricator for the friction rail of a a split, generally cylindrical shell adapted to pass onto the rail, and having an oil retaining lining embracing the rail.

9. A lubricator for the friction raill of a typewriting machine. comprising a split, generally cylindrical shell adapted to pass onto the rail, and having an oil lretaining lining embracing the rail. said shell being apcrtured to expose the lining for application of oil thereto.

10. A lubricator for the friction rail of a typewritincr machine, comprising a split, generally cylindrical shell adapted to pass onto the rail, and having an oil retainingl lining embracing the rail, the shell having holes to interlock with the usual spring bracket screws of the oscillator arm.

11. In a typewriting machine, in combination, a carriage, a friction rail, a bracket` on the oscillator arm rock shaft. screws fasten-A ing the bracket to the carriage, and a shell mounted on the rail and engaging said screws to connect the shell and carriage, said shell having an oil holding lining engaging the rail.

12. lubricating device for a typewriting machine friction rail` comprising an elongated shell applicable to the rail and havingv a porous lining, and a guide lip along the shell to support an applied oil can spout.

LOUIS M. LLORENS. 

